Resinous condensation product



Patented Dec. 1o, 1929 UNITED lsl-a'rns Pa- Tear eprice FRANCE', AssIeNon 'ro CoMr-AGNIE NA- TICNALE nn zrl'cacainlineg MANUFCTURES DE PRODUITS CHIMIQUES DU Nom) Baumes, ETABLISSEMENTS KUHLMANN, on Penis, FRANCE, A Conro- Ra'rIoN 0F' FRANCE i f' usines' CoNnENsA'ri'oN' PRDUCT R t No Drawing. lipliltiomled January 2; 1929,*Seria1 No. 329,940, and in France Deeeiiil'c-ri 3.1, 92'.

Artificial resinois products have already been obtained, according' to earlier experiments, by the combination ot an `aliphatic polyhydric alcoholwith a mixture of polyvbasic acidic compounds' and one o'r more natural resins (bythe act-ion of their resinic acids. v It ii'ill be undestdod:that for the purpose ot' the present invention; the termsA polybasic acids and natural resins are of a general character, and nclud'efpolybasic anhydrides in the one case-,and natu-ral gums in the other. Glyceryl phthalate resins can be considered aspolymers of glyceryl phthalate, all the free v vvhere n indicates the vdegree of polymerization. The .p roductswobtained by heatlng with resin are derivatives Vof this' base. 'I v1 The aboveI is a general description ofthe fundamental theoryl in .regard tothe r'esinous Aproducts as originated in the laboratories ofthe General AElectric Co. u

be'repr'esente'd by E GGOH, then the genera-l form of the new resinous products may b represented somewhat as'follows, 'n having From this, it will be seen that the base is of a form which is distinctly novel, no reference to any such base being made in the prior art.

The object of the present invention is lto CHI-l! i CHg-CH-Clra produce condensation products of these new resinous products with liseed oil-or other sicc'ative oil with a vi'ev to' obtviliin'gl coinpo'ud's possessing properties similar to those of the' oil varnishes.

New industrial products-,have been obv tained by heating these new resins with a siccative oil, linseed oil for example, in"a.n autoclave, lwithout the agency of a solvent.

A homogeneous mass' iii the form of. a more or less viscous liquid mass'is obtained under these conditions. By dissolving the ihass i different solvents singly or mixed together,l arising from the distillation of al'S, .ti's' and petrol'euis' (suchl as' benzol',tl1ol, xyll, petroleum, naphfha coal-tar' oil, ela) ver# nishes' a'ob'tained, drying above- 11G-"1206 and esta' is sieg-aie malignas @a ih @een 'or furnace varnishing,

300 arl'dgiving' a film Having a dielectric In the Present vt'rio the .col-lstrtonu Valuel of 1520 volts' to' one huudiedtli of ,ai of the resin base is of a somewhat different nature. 'If the resnic'facidofa natural resin millimetre (average ofi 8 tests) has been obtained with the varnish described in Examcompounds are sensitive to the action of dry-I` ing agents or siccatives, which shows thatthe hardening ofA the filin is accomplished principally lby Wayof oxidation. The following` are a few examples' of the manner in Which'these 'newr compounds and varnishes therefrom may be prepared:-

Ezra-malle I 450 parts of linseed oil and 450 parts of resin preparedby .combining a polyhydric alcohol, a lybasicy acidic substance and a natural resm at high temperatures are placed ina well stirred autoclave. The mass is heated for 16 hours at 210. The pressure rises to 5 or 6 kilos. A 1

The mass is then left to cool at -60 and tests made to ascertain if it be completely homogeneous. If it does not happen to be' so, it 1s heated again for 8 hours at 250 and longer if necessary. l

The mass isv in a viscous Aform at the =ordinary temperature, of a greenish .yellow colour, slightly luorescent.

This example is not restrictive with regard tothe proportions of siccative oil and resins, the'n'ature of the resin and of the siccative oil, the duration and temperature of the heat# ingwhich are' naturally variable with the resin or mixturev of resinused and the prod-l uct desired.

Example 1 1 100parts of the condensation mass prepared .under. the conditionsof Example I are diluted at 50 with 200 parts of naphtha which is poured in slowly. f

Under these conditions a varnish is obtained which, aitei` filtration, dries in a. few seconds at 450, in 3 minutes at 300, 30-45 y minutes at 200, 15-20 hours at 110.

pound used.

100 4o' 60- by pouring on 200 parts of a mixture of The films obtained with this varnish, dried y*at 300, have a dielectric strength of 1520 volts to the one hundredth of a milliinetre.`

Eample III arts of the mass obtained under thev conditions of"Examp'le'No. I are diluted at benzene (63) toluene (63) xylene '(63) coal vtar oil (10).- A'vvarnishis obtained which dries underI conditions similar to those ot "the previousvarnishes.' f'- y Industrial benzols mayof course be used 'with regard to the nature and proportions of solvent, and the nature of the reslnous com- All temperatures occurring in the .Specification are to be read as degrees centigrade.

I claim:

' 1.' The method of preparing a resinous condensation product which consists in heating in Aan enclosed space under pressure a siccative oiland an esterification rea ent having unesterified hydroxyl groups an containing a polyhydric alcohol radicle, a polybasicacid radiele and a natural resin radicle, the heating to be carriedout at a temperature suiiiciently high toproduce a soluble reaction product in which the oil is chemically combined with said reagent.

2. As a new "product, a resinous condensationproduct obtained by acting on glycerine with a mixture of phthalic anhydride and a natural resin in quantity suflicient to replace only a part of the free hydroxylgroups in t-he glycerine by the phthalic anhydride and a part by the resinic acid of the resin and leave some free hydroxyl groups remaining until a resinous mass is formed and heating this resinous mass under superatmospheric pressure with a siccative oil until a homogeneous mass is obtained in which the oil is chemically combined and which is soluble in benzene and petrol derivatives.

3. Method of producing a resinous condensation product which method consists in heating an aliphatic polyhydric alcohol with a mixture of a polybasic acidic compound and at least one natural resin to obtain a resinous mass and heating the same with a siccative oil at about 210o C. for 16- hours under superatmospheric pressure and cooling at 50-60 G. until a homogeneous mass is obtained, and having the oil so combined that it cannot be separated, as in the case of a simple solution.

4. Method as defined in claim 3,-wherein the aliphatic polyhydric alcohol'employed is glycerlne.

5. Method as defined the polybasic acidic phthalic anhydride.

6. A new resinous condensation product obtained by heating in an enclosed space under pressure a siccative oil and an esterification reagent having unesterified hydroxyl in claim 3, wherein ycompound employed is groups and containing a polyhydric alcohol radicle, a polybasic a'cidradicle, and anatural resin radicle, the heating to be carried out at a temperature sufficiently high to produce a soluble reaction product in which the oil is chemically combined with said reagent.

In testimony whereof I have hereunto affixed my signature.

ANDRE; HENRI VICTOR DURR. 

